Question about Ford Cars & Trucks
New batteries, disconnected components checked cables,electrical lines for shorts,breaks,tested alt,belts put load on charging system. I'm in trouble can't find problem!
Did you disconnect both batteries then check for a draw ?
If you use a test light between one negative cable and the battery post, and the light glows, you have something on the truck that is drawing current when everything should be off.
Posted on May 04, 2013
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Posted on Jan 02, 2017
Have you checked to see if the alternator is charging ? Run a volt meter on the battery with the engine running, have to have more than 14 volts. If 13 or less, then replace the alt.
Posted on Jan 18, 2010
SOURCE: 1999 cadillac sts over charging
on the positive battery cable under back seat is a red device with small orange and bule wires called a thermister controls alt output.this device is no longer availible from gm good news is you can buy a resistor of 1600 ohms from radio shack for lees than a dollar plug it in to connector instead of the thermistor and chargeing goes back to normal. radio, windows ,cruise, control should go back normal also
Posted on Apr 26, 2010
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The alternator keeps the battery in your Pontiac going, constantly recharging it as you drive. The battery will quickly drain if the alternator is bad, so it must be replaced in that case. The alternator is mounted in the engine and naturally connected to the battery in all models, but other components could be in its way depending on the type of Pontiac you own. This will determine how difficult such a replacement will be.
Difficulty:Moderately Challenging Instructions
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